Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458168 | Hair dyeing method using an aliphatic cationic amine and compound chosen from an aldehyde, a ketone, a quinone, a di-imino-isoindoline, and a 3-aminoisoindolone derivative | Alain Lagrange | 2002-10-01 |
| 6451067 | Dyeing method using a heterocyclic cationic amine and a compound chosen from an aldehyde, a ketone, a quinone, a di-iminoisoindoline derivative and a 3-amino-isoindolone derivative | Alain Lagrange | 2002-09-17 |